The Design And Implementation Of Data Acquisition And Display Control On Distributed Radar System

The distributed radar system,which is used to transmit electromagnetic waves with multiple radars,owns the capability of detecting,positioning,tracking and imaging for the targets behind walls.The distributed radar system is composed of two radars,each of which contains one transmitting antenna and two receiving antennas.Compared with the radar under the single perspective,the distributed radar system can improve the surveillance of stealth target by the collaborative signal.And the aim is to provide important decision-making information in the field of counter-terrorism,law enforcement of public security,military operations.According to the statement of the hardware and software,the problems are considered,such as the data signal-conditioning circuit,the data acquisition and preprocessing,the step frequency control,the power supply circuit,the data transmission protocol,the signal processing and display control etc.At last,the design and implementation of the data acquisition,control module,the signal processing and display control module are completed.The content is given in the following.1.The architecture of the distributed through-wall radar is analyzed.Based on the detection and position principle of the distributed through-wall radar,the function and parameters of each module are analyzed.Accordingly,the indicators of the data acquisition and control module and the signal processing and display control module are acquired.2.According to the index of data acquisition and control module,the hardware and software design of data acquisition and control module are accomplished,mainly including the chip selection,the design of hardware circuit,PCB production,the FPGA programming and debugging,joint debugging of hardware circuit and program control etc.3.According to the requirements of signal processing and display control module,the design of signal processing and display control PC is completed,mainly including the creation of WIFI and data reception,the design of PC window,algorithm transplantation,using the data cache technology and multithreading technology to complete signal processing and display.4.The combination of hardware and software debugging is completed and the experiments of system are finished,mainly including the closed-loop experiment and the field experiment.Based on the results of the closed-loop experiments,the stability of distributed radar system is validated.Eventually the joint positioning of distributed radar system is able to display the results on the interface through field experiment.